Heya Vic,
If you're looking for a ME-109 package which will make your hair stand on-end and make your heart go pitter-patter then go here (you may need to create a user ID and logon):
http://www.surclaro.com/download.php?op=getit&lid=9925"FS 2004 Messerschmitt bf109 collection CFS2 aircraft converted for FS98 aircraft, models BF109 E/F/G converted by R. A. Baum originals and posted with permission by hagochu (akemi mizoguchi)"
Hagochu took an old set of ME 109's from R. A. Baum which were originally intended for CFS 2 and completely rebuilt them using GMAX for FS 2004.
This set includes 3 ME109E models, 3 ME109F models, and 2 ME109G models all with updated textures and individual flight characteristics. In other words if you fly the ME 109E then jump into the cockpit of a ME 109G you'll definately be able to feel the difference.
The models feature opening/closing canopies and cowl flaps. They also include full FS 2004 Navigation/Strobe lights and virtual cockpits. They are extremely well done and very detailed.
The only warning that I have for you is that one of our fine SimV Forum Moderators, Ozzy72, loves to fly the Spitfire. If you're out there in one of these ME109's and come across him then be nice!